Home / 85,721.55-118,309.76-51,264.03

Finding the Fourth Proportional to 85,721.55, 118,309.76 and 51,264.03

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Solution

The fourth proportional to 85,721.55, 118,309.76 and 51,264.03 is: 70,752.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,721.55 : 118,309.76 = 51,264.03 : x
  2. Step 2: Convert to fraction form
    85,721.55/118,309.76 = 51,264.03/x
  3. Step 3: Cross multiply
    85,721.55x = 118,309.76 × 51,264.03
  4. Step 4: Simplify right side
    85,721.55x = 6,065,034,829.61
  5. Step 5: Solve for x
    x = 6,065,034,829.61/85,721.55
  6. Step 6: Final answer
    x = 70,752.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.